Conveyer for bock-stitching machines



M. CHRISTENSEN.

CONVEYER FOR BOOK STITCHING MACHINES. APPLICATION FILED MAY 28. 1917.

1,348,849, I Patented Aug. 10, 1920.

UNITED STATES PATENT OFFICE.

MARTIN CHRISTENSEN, OF RACINE, \VISCONSIN, ASSIGNOR TO CHRISTENSEN MACHINE COMPANY, OF RACINE, WISCONSIN, A CORPORATION OF WIS- CONSIN.

CONVEYER FOR BOCK-STITCHING MACHINES.

' Specification of Letters Patent.

Patented Aug. 10, 1920.

Application filed May 28, 1917. Serial No. 171,442.

To all whom it may concern:

Be it known that I MARTIN CHRISTENSEN, a citizen of the United States, and resident of Racine, in the county of Racine and State of Wisconsin, have invented new and useful Improvements'in Conveyers for Book- Stitching Machines, of which the following is a description reference being had to the accompanying drawings, which are a part of this specification. V

The invention relates to conveyers for book-stitching machines. 4

In stitching machines one type of con veyer for carrying the signatures consists of a movable saddle upon which the signatures are placed astride of the same and are moved along with the saddle andtheir rear edges abut against pins or pusher members secured to the saddle. It frequently happens in practice that owing to the speed at which the conveyer is run or to the sizes of the sheets carried by it that different spacings of the pins, on the conveyer becomes necessary and of course it is essential that the adjustment be made in the quickest and easiest manner possible. It is therefore the object of this invention to provide the conveyers with a quickly detachable pin or pusher member which may be secured to the conveyer in any desired adjustment to accommodate for the requirements of the.

work. p

The invention is further designed to provide a construction in which the pusher members may be snapped into place onlthe conveyer and quickly removed therefrom.

The invention is further designed to provide a construction in which the pusher members are secured to the conveyer by re silient means which may be either the resiliency of the metal forming the member or an auxiliary spring.

The invention further consists in theseveral features hereinafter set forth.

In the drawings: v

Figure 1 is a side view of the device em: bodying the invention showing it applied to one form of movable saddle conveyer;

Fig. 2 is a section taken on the line 2-2 of Fig. 1;

Fig. 3 is a modified form of device embodying the invention, showing it applied to another form of movable saddle conveyer;

Fig. 4 isa section taken on the line 44 of Fig. 3;

Fig. 5 is another form of device embodying the invention showing it applied to another form of conveyer;

Fig. 6 is a' section taken on the lines 6-6 of Fig. 5; i

Fig. 7 is another form of device embodying the invention; 1

Fig. 8 is a section taken on the line 88 of Fig. 7.

In Figs. 1 and 2, I have shown the preferred embodiment of the invention which consists of a pusher member 9, formed by a metal bar bent upon itself to form overlapped curved ends 10 and 11 which spread apart owing to the natural elasticity of the metal which may be of common bar stock. This form of device may be used in connection with any suitable form of movable saddle conveyer and in the drawings I have shown a portion of a conveyer consisting of a plurality of inverted V-shaped members 12 hingedly connected together and running in a guide 13.

The particular form of saddle conveyer is immaterial so further detailed description of the conveyer is considered unnecessary. The pusher member 9 is detachably secured to the conveyer by inserting the curved end 10 through alined rectangular holes 14 in opposite sides of one of the members 12 so that the ends 10 and 11 project outwardly and upwardly from the sides of the conveyer to form abutments for the rear edges of a group of signatures placed upon the conveyer and one side of the member is provided with a notch15 which receives one edge of the member 12 at the openings 14 nearest the open portions of the bar and said member is held to the member by the resiliency or elasticity of the parts which tend to spread apart and hold them against the sides of the holes 14 and in addition the notch 15 locks the member 9 against lengthwise movement while the rectangular holes 14 with the member 9 shaped to fit said holes prevents any relative movement of said member 9 with respect to the member 12. It will be noted from Fig. 1 that each of the members 12 is provided with the holes 14 so that the position of the pusher members 9 may be changed along the length of the conveyer.

The device may be readily removed by pressing the spread apart portions of the end 11 together to disengage the notch 15 from the member 12 and then removing it while to replace it it isonly necessary to push it through the holes 141 and allow it to be snapped into locking engagement with lar to those forming the conveyer shown in Figs. 1 and 2. This form of device is locked to the member to which it is connected by inwardly extending projections 20 engaging in holes or depressions 21 in the sides of the 'members .12 which cooperate with the 'fianges 19 to lock or hold the device in position as shown in Fig. 1. It will be, noted that this form of device may also be used in connection with the conveyer shown in Figs.

l and 2. V.

,In Figs. 5 and 6 I have shown another form of device embodying the invention consisting of a yielding member 22 shaped to conform to the contour of the member 23 forming part'of the conveyer and having an upstanding finger 24. This device is adapted to be snapped down over any of the members 23 and to be locked thereto by inwardly extending sets of projections 25 engaging in holes or depressions 26 in the sides of the members 23. For further detailed description of the conveyer shown in these figures'reference may be had to my.

Patent No. 1,141Q,734E, dated May 25, 1915.

'In Figs. 7 and 8 I have shown another form of device embodying the invention consisting of an angled member 27 provided with a barrel 28 having a bore 28' in which a square locking rod 29 is slidably mounted. This rod has a square head 30 which may be inserted in the large square openings 31in anyone of the conveyer members 12 orany other suitable conveyor member after which the device is moved 'laterally'so that the square rod 29 engages in the small rectangularopening 32 leading from the opening 31. A spring 33 is interposed between the top of the rod 29 and the barrel 28 and by pressing inwardly against the spring 33, inserting the head of the rod 29 through the opening 31 and then moving the rod into the slot 32 and releasing the spring the pusher member will be held to the conveyer member 12' by the clamping action of the head 30 and member 27 thereby locking the parts tog'ether' through a snap connection, the

squared contacting parts preventing lateral movement of the member 27 with respect to the member to which it is connected.

It will thus be apparent that the pusher devices may be readily attached to any one of the conveyer members desired by a quick detachable interlocking connection between the pushers and the conveyer members to accommodate for the requirements of the work in hand.

I am aware that the details of construction'herein shown and described are subject to some modification and change, and Idesire it to be understood that such changes as come within the scope of the appended claims I deeni'to be within the spirit of my invention.

What I claim as my invention is:

1. The combination, with one of the members of a saddle conveyer having a plurality of apertures therein, of a yielding pusher member having a portion thereof insertible through the apertures in the saddle member to project outwardly from the sides thereof, said pusher member yieldingly clampingly engaging said saddle member adjacent said apertures and held thereby against movement.

2. The combination, with one of the members of a 'usaddle conveyer having a plurality of alined apertures thereimof a bar bent upon itself to form a pusher member having spread apart portions at one end, said bar being insertible within the alined apertures in the saddle member and havarms extending outwardly beyond said so ddle member, and'a detachable interlockable connection between the spread apart portions and the side of the apertures adjacent thereto.

3. The combination, with one of the members of saddle conveyer having alined apertures therein, of a bar bent upon itself to form a pusher member having spread apart yieldable portions at one end, said bar being insertible within the alined apertures and having arms extending outwardly and-upwardly from the saddle membenand having a notch in one ofsaid spread apart portions adapted to be yieldingly held against the side ofthe'aperature adjacent theretoQ 4. In a device of the class described, the combination with an endless conveyer provided with a plurality of spaced seats. of pusher members engageable in said seats and having substantially rigid and interchangeable connection with the seats but being capable of ready detachment therefrom.

Intestimony whereof, I aflix my signature.

MARTIN CHRISTENSEN. 

